tmTransactionManager.cpp

/* ***** BEGIN LICENSE BLOCK ***** * Version: MPL 1.1/GPL 2.0/LGPL 2.1 * * The contents of this file are subject to the Mozilla Public License Version * 1.1 (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * http://www.mozilla.org/MPL/ * * Software distributed under the License is distributed on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License * for the specific language governing rights and limitations under the * License. * * The Original Code is Mozilla Transaction Manager. * * The Initial Developer of the Original Code is * Netscape Communications Corp. * Portions created by the Initial Developer are Copyright (C) 2003 * the Initial Developer. All Rights Reserved. * * Contributor(s): * John Gaunt <jgaunt@netscape.com> * * Alternatively, the contents of this file may be used under the terms of * either the GNU General Public License Version 2 or later (the "GPL"), or * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), * in which case the provisions of the GPL or the LGPL are applicable instead * of those above. If you wish to allow use of your version of this file only * under the terms of either the GPL or the LGPL, and not to allow others to * use your version of this file under the terms of the MPL, indicate your * decision by deleting the provisions above and replace them with the notice * and other provisions required by the GPL or the LGPL. If you do not delete * the provisions above, a recipient may use your version of this file under * the terms of any one of the MPL, the GPL or the LGPL. * * ***** END LICENSE BLOCK ***** */#include "plstr.h"#include <stdlib.h>#include "tmQueue.h"#include "tmTransactionManager.h"#include "tmTransaction.h"#include "tmUtils.h"///////////////////////////////////////////////////////////////////////////////// Constructors & Destructor & Initializer00048tmTransactionManager::~tmTransactionManager() {
PRUint32 size = mQueues.Size();
tmQueue *queue = nsnull;
for (PRUint32 index = 0; index < size; index++) {
queue = (tmQueue *)mQueues[index];
if (queue) {
delete queue;
}
}
}
PRInt32
00061tmTransactionManager::Init() {
return mQueues.Init();
}
///////////////////////////////////////////////////////////////////////////////// public transaction module methodsvoid00069tmTransactionManager::HandleTransaction(tmTransaction *aTrans) {
PRUint32 action = aTrans->GetAction();
PRUint32 ownerID = aTrans->GetOwnerID();
tmQueue *queue = nsnull;
// get the right queue -- attaches do it differentlyif (action == TM_ATTACH) {
constchar *name = (char*) aTrans->GetMessage(); // is qName for Attaches
queue = GetQueue(name);
if (!queue) {
PRInt32 index = AddQueue(name);
if (index >= 0)
queue = GetQueue(index); // GetQueue may return nsnull
}
}
else// all other trans should have a valid queue ID already
queue = GetQueue(aTrans->GetQueueID());
if (queue) {
// All possible actions should have a case, default is not valid// delete trans when done with them, let the queue own the trans// that are posted to them.
PRInt32 result = 0;
switch (action) {
case TM_ATTACH:
queue->AttachClient(ownerID);
break;
case TM_POST:
result = queue->PostTransaction(aTrans);
if (result >= 0) // post failed, aTrans cached in a tmQueuereturn;
break;
case TM_FLUSH:
queue->FlushQueue(ownerID);
break;
case TM_DETACH:
if (queue->DetachClient(ownerID) == TM_SUCCESS_DELETE_QUEUE) {
// the last client has been removed, remove the queue
RemoveQueue(aTrans->GetQueueID()); // this _could_ be out of bounds
}
break;
default:
PR_NOT_REACHED("bad action in the transaction");
}
}
delete aTrans;
}
///////////////////////////////////////////////////////////////////////////////// Protected member functions//// Queue Handling//tmQueue*
00126tmTransactionManager::GetQueue(constchar *aQueueName) {
PRUint32 size = mQueues.Size();
tmQueue *queue = nsnull;
for (PRUint32 index = 0; index < size; index++) {
queue = (tmQueue*) mQueues[index];
if (queue && strcmp(queue->GetName(), aQueueName) == 0)
return queue;
}
return nsnull;
}
// if successful the nsresult contains the index of the added queue
PRInt32
00140tmTransactionManager::AddQueue(constchar *aQueueName) {
tmQueue* queue = newtmQueue();
if (!queue)
return -1;
PRInt32 index = mQueues.Append(queue);
if (index < 0)
delete queue;
else
queue->Init(aQueueName, index, this);
return index;
}
void
tmTransactionManager::RemoveQueue(PRUint32 aQueueID) {
PR_ASSERT(aQueueID <= mQueues.Size());
tmQueue *queue = (tmQueue*)mQueues[aQueueID];
if (queue) {
mQueues.RemoveAt(aQueueID);
delete queue;
}
}